Pull-socket.



H. HUBBELL. PULL SOCKET.

APPLIOATION FILED 00T.3, 1911.

Patented June 17', 1913.

` wf/vm Ma BVN' y y mywf UmTED s'rarns refr nir ,HARVEY HUBBELL, or Barnenkronr, connacmrcnr.

PULL-soenna;

. struction enabling me to dispense with the usual guide for the chain, to make the socket reversible and furthermore to practically eliminate danger of lthe mechanism getting out of order` in use.

With these and other objects in view I have devised the novel pull socket of which the following description in connection with the accompanying drawing is a specification, reference characters being used to indicate the several parts.

Figure 1 is a View partly in elevation and partly in longitudinal section, illustrating thplnstruction and 'operation of my novel s c wit Fig. 2 a plan view of the lower insu- 'lating block, the brackets being in section;

Fig. 3 an edge view of the lower insulating block detached; Fig. 4 a vertical section of the switch mechanism with the operating mechanism removed, the position of the parts corresponding with Fig. 1; Fig. 5 a plan view of the contact plate detached; Fig. 6 a plan view of the operating plate and insulating link detached; Fig. 7 an edge view of i v the operating plate with the insulating link removed; Fig. 8 an end View of the reversible bracket plate and bracket detached; Fig. 9 an elevation of a pull socket corresponding with Fig. 1 but showing the operating lever reversed; and Fig. 10 is an elevation of the reversible bracket plate and the operating lever det-ached.

1Q denotes the socket shell, 11 the cap, 12 the insulating lining, -13 the screw shell, 14 and 15 insulating blocks whichI term for 4convenience upper and lower insulating blocks respectively, and 16 the brackets by vwhich the insulating blocks are connected. The lower insulating block is provided with inclines 17 which terminate in abrupt shoulders, alternate inclines carrying plates 18 which are in the circuit. The contact plate 19 and the operating plate 20 are adapted to Specicaton of Letters '.Patent,

Application filed October 3, 1911.

Patented Jamel?, 1,913. serial No. 652,670.

turnfreely on a central pin 21. The contact plate is provided with spring arms 22 which engage the inclines and is engaged and operated b v the operatingg'plate, oscillation of the operating plate producing intermittent -rotary movement of the contact g plate.

y 23 denotes a spring which returns the operating plate toyits. normal position4 after each'actuationfone end of said spring being connected to the pin and the other to the operating plate. The tension of the operating spring may be adjusted by rotating the pin, the spring additionally acting to hold the angular head of the pin in a socket in theupper insulating block, which retains it against rotation. 4

Further description of the switclrfmechanism is not thought to be required asit has been illustrated, described and claimed in various patents heretofore gran-ted to me.

The operating chain or cord 24 is connected to an operating lever .25, .one end of which is pivoted to a bracket 26 which is formed integral with or rigidly secured to a reversible plate 27. y

28 denotes an insulating link one end of which is pivoted to operating plate 20 and the other to a connecting rod 29 on which the operating lever is mounted to turn. The special construction of these parts is immaterial so long as the operating lever, carrying with it the bracket plate, is free to rotate on they connecting rod. The bracket is shown as formed from metal struck out from the plate but left attached, the connecting rod passing through the opening in the plate and' being provided with an offset portion to which the end of the insulating link is connected. Rod 29 is shown as detachably connected to the operating lever by means of a screw 35, the head of which lies on the outer side of the lever, the inner end of the opening in said lever through which the rod passes being greatly enlarged to permit the rod to swing with the movements of the lever. In the assembled position, the lever and the bracket lie outside the socket shell, as clearly shown in Figs. 1 and 9. The ends of the reversible bracket plate engage recesses 30 in the edges of the upper and lower insulating blocks and are provided on their sides with tongues 31 which are turned inward as shown in Fig. 8 so as to just pass between the insulating blocks and act as supports therefor in connection with brackets 16. In assembling, bracket 26 to which the operating lever is pivoted is received in a slot 32 in the socket shell. I have shown the insulating link as; provided near its ends with eyeleted holes which engage respectively pin 33 on operating plate 20 and pin 34 on the offset portion of connecting rod 29.

It is of course necessary that under all circumstances the free end of the operating lever project upward so that a downward pull upon an operating chain or cord connected thereto will swing the operating plate backward and the return movement of said plate caused by spring 23 will carry the contact plate forward, which will open or close the circuit. As it is quite common for lamp bulbs to project upward leaving the cap end of the socket shell downward, it is necessary to provide for reversing the operating lever. In my present structure, the socket shell being removed, in order to reverse the lever from the position shown in Fig. l to the position shown in Fig. 9, or vice versa, it is simply necessary to draw the operating lever and reversible plate outward against the power of spring 23 far enou h to disengage said plate from the insulating blocks and then give the plate and Voperating lever a half turn on the connect- Copies o this patent may be obtained for ing rod and permit the spring tovdraw the plate (carrying with it the connecting rod and operating lever) into enga ement with -the recesses in the insulating b ocks.

and an operating lever lying wholly outside the socket sh'ell and having an opening through it enlarged at its inner end of a connecting rod loosely engaging the lever and extendin throu h said opening and an in`- g sulating nk pivoted to the operating plate and to the connecting rod.

2. The combination with a socket shell,

insulating blocks and a switch mechanism,

of a reversible plate having tongues adapted y to pass between the insulating blocks, for the purpose set forth, a bracket carried by said plate, an operating lever pivot/ed to said i bracket outside the shell and an insulating connection intermediate said lever and the switch.

In testimon whereof I ax my signature 55 in presence o two witnesses.

v HARVEY HUBBELL. Witnesses A. M. Woos'rER, S. W. ATHERTON.

five cents each, by addressing the Commissioner of Patents, Washington, 1D. C. 

